Accumulated Other Comprehensive Income (Changes in AOCI) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 2,772
Other comprehensive income, net of tax	248	997	1,836
Ending balance	3,020	1,933	2,772
Gains and Losses on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(816)	(591)	(591)
Other comprehensive income (loss) before reclassifications	(117)	(76)
Amounts reclassified from accumulated other comprehensive income	0	0
Other comprehensive income, net of tax	(117)	(76)
Ending balance	(933)	(667)
Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	3,588	1,527	1,527
Other comprehensive income (loss) before reclassifications	459	1,132
Amounts reclassified from accumulated other comprehensive income	(94)	(59)
Other comprehensive income, net of tax	365	1,073
Ending balance	$ 3,953	$ 2,600